Note 6 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Mar. 31, 2021
Gross value		$ 112,736
Accumulated Currency Translation Adjustment		(3,088)
Accumulated Amortization		(20,662)
Net book value	$ 91,157	88,986
Useful life (Year)	13 years
Developed Technology Rights [Member]
Gross value		89,580
Accumulated Currency Translation Adjustment		(1,539)
Accumulated Amortization		(13,510)
Net book value	$ 75,899	74,531
Useful life (Year)	15 years
In Process Research and Development [Member]
Gross value		3,256
Accumulated Currency Translation Adjustment		(951)
Accumulated Amortization		0
Net book value	$ 2,587	2,305
Customer Relationships [Member]
Gross value		9,000
Accumulated Currency Translation Adjustment		0
Accumulated Amortization		(1,052)
Net book value	$ 8,173	7,948
Useful life (Year)	10 years
Distribution Rights [Member]
Gross value		4,700
Accumulated Currency Translation Adjustment		(415)
Accumulated Amortization		(4,285)
Net book value	$ 0	0
Useful life (Year)	5 years
Patents [Member]
Gross value		1,000
Accumulated Currency Translation Adjustment		(183)
Accumulated Amortization		(594)
Net book value	$ 259	223
Useful life (Year)	16 years
Trade Names [Member]
Gross value		5,200
Accumulated Currency Translation Adjustment		0
Accumulated Amortization		(1,221)
Net book value	$ 4,239	$ 3,979
Useful life (Year)	5 years

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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